Let them check the line first, I had a similar problem 4 years ago with wanadoo. Again the the modem light was amber and not green, turned out to be a fault where the line conected to the house. All was sorted very quick ay a friendly BT engineer, all that was required was a new BT conection box, he supplied me with a dual adsl filter and line box so no more filters required for individual items like the xtention phone ect. Also a good lengrh of decent cable was supplied to go from line box to modem. All at no cost to me.